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首页> 外文期刊>Journal of Systems and Control Engineering >Active fault-tolerant tracking control for near-space vehicle attitude dynamics with actuator faults
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Active fault-tolerant tracking control for near-space vehicle attitude dynamics with actuator faults

机译：具有执行器故障的近空飞行器姿态动力学的主动容错跟踪控制

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摘要

Based on both adaptive and fuzzy logic techniques, the fault-tolerant tracking problem for near-space vehicle (NSV) with actuator faults is investigated in this paper. First, the nonlinear NSV attitude dynamics is given, which can represent the dynamic characteristics of NSV in both ascent and re-entry phases. The actuator fault under consideration in this study is the loss of effectiveness, and a novel fault detection scheme is presented by designing a nonlinear fault detection observer. In terms of fault detection information and multi-observer technique, a fault isolation scheme is proposed. Taking advantage of a fuzzy logic system (FLS) to approximate the unknown nonlinear function, an adaptive FLS-based fault-tolerant tracking control law is developed to achieve asymptotic output tracking and closed-loop stability of NSV attitude dynamics in spite of the actuator faults. Simulation results are provided to illustrate the feasibility of the proposed fault-tolerant tracking control approach.
机译：基于自适应和模糊逻辑技术，研究了具有执行器故障的近太空飞行器（NSV）的容错跟踪问题。首先，给出了非线性的NSV姿态动力学，它可以代表NSV在上升和再入阶段的动力学特征。本研究中考虑的执行器故障是有效性的损失，通过设计一个非线性故障检测观测器，提出了一种新颖的故障检测方案。针对故障检测信息和多观察者技术，提出了一种故障隔离方案。利用模糊逻辑系统（FLS）逼近未知的非线性函数，开发了一种基于FLS的自适应容错跟踪控制律，以实现渐进输出跟踪和NSV姿态动力学的闭环稳定性，即使执行器有故障。仿真结果表明了所提容错跟踪控制方法的可行性。

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